Magnetic pump



May 17' 1927 w. WERNER MAGNETIC PUMP Filed sept. 5.. 1925 5 Sheets-Sheet 2 Gttozwuj May 17 1927' w. WERNER MAGNETIC PUMP Filed Sept. 5 1925 5 Sheets-She'et 3 May i? y o w. WERNER MAGNETI G PUMP Filed Sept. 5 i.

1925 5 Sheets-Sheet 4 Wlllllllll I w (Oi/MAM wve'noz a wu aus: um*

W. WERNER May 17 1927.

MAGNETIC PUMP Filed Sept. 5, 1925 5 *Sheets-Sheet 5 atroz/wut Patented May 17, i927.`

,- UNITED STATESN PATENT oFFics.

WILLAM WERNER, or MEXIA, TEXAS..-

MAGNETIC rtm1.

application ined september 5, 1925. sei-iai No. 54,679.

My invention `relates'to means for'operating' a reciprocating pump "in deep well pumping operations. It eomprises-l a magnetically operated pump rod and the means b f which the a aratus ma beV arrano'ed in al well oi small diameter, such as is lfound in pump plunger and may even be submerged in the oil, or other fluid which is being' pumped.

It is desired that the device be auton'iati-v cally operated so that it may cease operations when the oil `level is below a `certain predetermined `point in the well, and to auto' matically start again when the oil has accumulated in the well to `the desired point.

The invention lies largely'inthe particu lar construction and arrangement of the parts whereby the reciprocation ot the pump rod is accomplished tlironghen electromagnetic device and whereby the` starting and stopping` of the device, duel to the change inthe level of the oil in the well, may be regulated.v These` details of construction will more clearly appear in the de tailed deecriptitm which follows.

Referring' to the drawing herewith, Fig', 1 is a transverse section through awell casing with my device therein, illustrating the up`- per end oll said device in vertical section. Fig. 2 a longitudinal section through the magnetic lift illustrating` the upper portion thereof. Fig. 3 is a longitudinal section similar to that shown in Fig. 2, illustrating the lower end ofthe said magnetic lift. Fig. f-i is a `detailed vertical section on the line 4.11 oi'I Fig'. 1. Fig. 5 is a transverse section on the line 5 5 of Fig. 3. Figs. '6,7 and 8 are transverse sections on the lines 6- 6, 'T-7 and SHS respectively of FigQ1. F10'. 9 is :1. sectional view similar to that shown in Fig. il., illustrating` the parts in diiierent position. Fig. 10V is a view similar to that shown in Fig'. 3 with the parts in different position, it being' understood. `that Fig. p11 illustrates the lower end of the lliftshown in Fig. 10. Fig'. 12 is'a transverse vsection on the line 12-12 of Fig. 16. Fig. 13is la view on the line`13-13 of Fig'. 11. Fig. Misa' broken enlargeddetail'illustrating the means v by -which the armature plates are secured f loosely together. Figs. 15 and 16 are longi tudinal sections illustratingthe "automatic switch for directing' the current into'the lifting magnets, the parts being indifferent position in the two views. Like numerals of reference are employed to designate like parts in all the views.

i The magnetic lifting device employedwith this type ot pump is a modification ot the arrangement shown in my co-pending app initiation, No. 41,725, filed July 6th, 1925.

It is illustrated best in Figs. 2, 3, 10 and 11, the device as shown in the views 2 and being' the same as that shown in l3`igs`; 10 and 11, except that the, parts are in different po' sitioniuthe two lsets of views. .Referring particularly to'Figs. 2 andv 8, the parts of the lifting device are shown in a position ,assumed where the pump rod lis at the lower end of its stroke. In this ydevice thereA isa housing 2 of such size as to fit loosely within the casing of thefwell.. "The housing is secured at its lower endto a collar, or coupling, t by means of which it is connected to the pump barrel 5. Abovethe coupling 11,' and secured at its lower end within they housing, is a sleeve 3. At the upper end of the housing' 2 there is a similar sleeve 3', both said sleeves 3 and 3 beingof magnetic'y material. Below the sleeve a suitablefdis tance is a core 6 of magnetic material, such' as sott 1ron,sa1d core being adapted to form an electro-magnet, and is therefore wound with a series of coils 7 of an electric lconduotor. i y

Above the core is a series of platesv 8 of iron, or similar magnetic material, the upper of `said plates 9 being oi' slightly increased thickness and having threaded engagement at 10 on its inner'ktace with a tubular rod 11 which extends downwardly through a series of magnetsandis secured'at itslower end to the pump rod Las shown.` This tube is perforated at 12, as shown in theditferent` f views, to allow the Huid' to pass `trom the tube into the housing. y v, y Spaced below theniagnetic core 'is 'a similar magnetic core 13, the two cores beingA spaced apart by a collar 14 ot electrical insulating material.` The core is wound by a conductor 7, as in the other instance, and it will be noted that the windings extend beyond the end of the cores (i and 13, the windings being separated trom the plates 8 and 9 by a sleeve 15 ot brass or some non-magneticv material. vIt will be note-d that the plates 8 are secured loosely together by a series of pins 1G threaded at one end to engage within the end ot the magnetic core or to the next adjacent upper plate. The said pins 1G are arranged in staggered lrelation on alternate pl sites so that they will not all be in. they saine plane,l as

shown in Fig. 13..v The head ofthe pin is fitted loosely within `an opening .within the plate and the plate next. adjacent the head ot' the pin isprovidedy with an yopening 1,7 to allow the pinv toproject therethrough when the plates are drawn together by the magnet. lThis arrangement is more particularly described in my cofpending application, previously referred to. i

Below the series of plates 8, last described, isa third core 18-wound with. a conductor 7, as in the previous case, and having below'the said corea series ot plates 8, said plates beingseparatedfrom the windings by. thevsleeve 15. The'core 18 is separated. from the plates of thelmagnet above by sleevesllfl of. insiillating material. Below the windings otthe core 18 is the ksleeve 3. previously described. below said vmagnet are suspended tov the said core and to each other by a vseries ot pins 1G, asin case ot theupper lifting device.4 `It will be .notedthat thelowermost of the plates below the magnets 13 and 18` are` in threaded engagement with the tube 11 so that whenthe plates are drawn into contact with each other the tube 1.1 will be rai-sed. The windings 7 about the upper magnet Gare connected by vmeans of the wire 19 .to'a cableQO in a manner which will belater described. The windings of" the two lower magnets 13 and 1S are connected through the wire Q1 to the same cable 20 through different connections. The two lower magnets` which are the lifting magnets are. hence adapted'to,operate together to lift the pump rod, while the upper series of plates connected with the magnet 6' A series .ot plates 8.

lowing the rod to move downwardly. lVhen the pump rod is to be lifted the current will be shifted into the wire 21 and released trom the wire 19, thus energizing the two lower magnets 13 and 18, drawing the plates 8 and 8 upwardly against the magnetic cores into the position shownk in Figs. 1() and 11, thus serving to draw the tube and pump rod upwardly.

The automatic switch ydevice by means of which the current is directed iirst through the wire 19 and then through the wire 21 alternately is shown in Figs. 15 and 16, it being understood that the two views illustrate the same construction. with the parts in diii'crent position. In Fig. 15 the currentI is arrangedto discharge through the wire 21.'. The tube 11 is extended above the magnetic lifting device and projects within the lowerend ot a tube Q2, 22, it has a radial ilange, or ring, 23, and spaced above this flange adjacent the upper end oll the tube 11 `is a second radial flange Q11. Thetube 22t'orms ay casing within which the tube 11 is adapted to reciprocate tor a limited distance in each direction. The said casing is provided with opposite vertical slots 25 between its ends to receive a transverse pin 26. A short collar 27 upon the casing 22 .tits about the said casing andtends to close the slot 25 above and below the pinA 2G, which passes through an opening in said collar.v

. lVithinlthe casing are two pairs ot oppositely extending dogs 29. Said dogs are pivoted upon. Apins 30 extending through the cross pin 26. The central'tube 11 is provided .with `an elongated slot 31 on a line with said dogs and thecnds ot said slots are beveled in such a manner that the slot is tapered outwardly,.as shown at 39. i

rlhe dogs-'29 are vtermed with beveled ends and about midway oty their ends each dog has Aan outwardly extending linger 34, adapted, when in the proper position` to tit within recesses 35 on the inner taco ot the casing 22. Above and below the transverse pins 26 upon which the dogs are piv oteehare coiled springs 3G. Said springs normally extend to a point adjacent the end ot the slot 31 in the tube and space the dogs from the adjacent flanges 23 and 24e against which they. bear at their ends. Each set ot dogs normally held resiliently apart by means of a leat spring 37, as clearly shown in 'the drawing.

The casing 22 has threaded engagement with a coupling sleeve 38 secured upon the upper end ot the housing 2 and acting on its` outer face to connect said housing with an upper housing 39 tor the switch. Said housing 39 comprises a short length ot pipe. the upper end4 ot'which is threaded internally to receive a ring 10 and a second upper ring L11 spaced somewhat from the lower and within this tube Sil lil f rbiv i coupling head 43.

Vhead is provided with a lower shoulder serving to limit the upper end otl a float 6l mounted on said tube. The upper end enlarged slightly and threaded internally at 62 for attachment to a nipple 6?. Mounted slidably upon the tubing l5 is the float (il, previously referred to. Said float. may be of. some substance of light specific gravity, or may be of hollow metal. as shown in the drawing. It has its inner sleeve (lll which surrounds the tubing made with a lateral rextension 65- thereon. as shown in Fig. 8.

so as to provide means between the tubingI and the float for a wire or cable 7st surround-V ed by insulating material 67. This wire and the insulation thereon is secured to the tubing by. bands ($8 which surround the tubing and theinsulation at spaced intervals.

The cable 2O which extends upwardly from the switch below is provided with a lloat operated switch at a point slightly above the with av point 69y which telescopes within a sleeve. 70 of a head 7l, which has a tapered recess TQ in the upper end thereof to receive the point of a cooperating member T3 of the switch above. Said member V73 forms the lower end of a cable Tel` extending upwardly toward the surface. The sliding` i member 71 of the switch is connected by pins 75 to the float member. The 4insulation about the switch is preferably of flexible. tubing, such as rubber, so as to provide a chamber about the switch which may be filled with cup grease. or similar material, to eti'ect the water-tight connection about the switch. lt will be noted that when the float 6l rises it will carry the member 7l upwardly into contact with the point of the member 73 to close f the contact, as shown in Fig. l.` Thus, when the iloat is submerged, the pressure will tend to-raise the float and close the switch.

vIn order that the movement between the opened and closed position of this switch may be abrupt, Iprovide on one side of the tubing l5 a' iesilient connection between the float and the tubing. f This connection is shown at T6 in dotted lines in Figs. l and t), and in full lines in Fig. 4. The wall of the tubing 45 is thickened at this point .and provided with upper and lower notches 77 therein, which are adapted to receive the central point 7S of springs 7 9 secured at their ends .within the inner wall of the float 6l, thus tending, to resiliently engage the notches 77 The cable provided -head in the tubing."v VEngagement between the springs 77 and the tubing is suliicient to hold the iioat in either upper or lower position, as may be desired, until a predetermined,force is exerted thereon, so as to move the float against the action of the spring. Then the level o'l" the tluid'in the well exposes the float, the weight of the tloat itself will be suiiicient to move the same down a,f ;ainst` the action of these springs. When this movement does take place, it will be an abrupt one, tending to snap the switch into closed position quickly. The same abruptaction takes place when the lloat has been submerged sufliciently to cause it to move upwardly against the action ot the springs 79.

lt is contemplated that the connection between the wire il and a cable 8O extending to the surface may be made after the tubing and th;` pump have been inserted into the well. To do this, l have provided a. weight 8l at the lower end of the cable S0 to cause it to be drawn down by gravity into the well, and this we' it is connected with the flexe ible tube S2 n" insulating material which surrounds a member 83 ot' the switch. The tube extends beyond the member 83 and iS adapted toreceive a point 84 upon the up per end. ol" the cable Tll. This point is held erect bv a support con'iprising a sleeve 85 of insulating material secured to a perforated disc 86, supported at the upper end of the A guide ris formed to direct the upper portion ot the switch centrally into position to receive the point S4, said guide comprising a collar 87 secured upon the inner portion oi: the nipple 6?) and inclined inwardly to narrow the passage through the nipple, and thus serve to centerthe lower end oi the cable as itis dropped downwardly into the well. tending to make it register with the upper end ot the point 84 of the cable 74;. The insulating tube 82 may be lilled with lgrease and when the connection has been tightly made through the weight of the upper cable` the parts will asnime the position shown in Fig. 1. The nipple 63 is secured at its upper end to the tubing 88 which will serve to carry the fluid upwardly to the suriace and to provide a better pas sage about the weight 8l. Longitudinal grooves shown at 89 vin dotted lines are formed in the weight so as not to obstruct the flow ot oil into the tube.

lt is believed that the operation of my device has been made clear. The assemblage of the magnetic pump with its automatic switch above the same and the automatic means for stopping the pump when the level of the Atluid in the well has reached a predetermined low position. all may be lowered into the well with the tubing` from the surtace and will serve to pump the oil from the well without the necessity of the usual sucker rods and operating means atthe suriUt) face of the well. It also is adapted because of its automatic control to operate only*l when there is sufficient oil for the pump, and hence the use ot' current willA be economical. The working parts ot the device have been made as simple and strong' possible so that there will be little danger olf their getting out ot order or ilailing to operate as desired. The advantages otl this type ot construction will be ajijnufent to those skilled in the art without further description.

that I claim as new and desire to protect by Letters Patent is:

1. ln a device otf the character described, a hollow pump rod, electro-magnetic means to .raise said rod, similar means to assist in lowering said rod, automatic means to alternately energize said raising' and said lowering means, and means to automatically deenergize said electro-nnurnetic means when the fluid in the well reaches a preifletermined level.

2. ln a device ot the character described, a hollow pump rod, electro-magnetic operating means to raise lsaid rod, similar means to assist in .lowering said rod, an automatic switch controlled by the movement ot said rod to alternately energize said raising' and said lowering means, and lmeans to automatically ile-energize said clectro-niagnetic means controlled by the low level ol' fluid in the well.

3. ln a device ot the character described, a hollow pump rod, electro-maanetic means connected therewith to raise said rod, said means having a conducting' cable connected therewith, similar means to assist in lowerinnr said rod, said lowering' means having' a cable connected tl'icrewith, and a switch with which said cables are coimected, said switch comprising' a cross pin on said rod connected with the said cables and operated through the moven'ient ot said rods to open the switch in one cable and close it in the other alternately in the manner described.

Ll. In a device of the character described, a hollow pump rod adapted 'for connection with a pump plnngcna plurality of mags netic cores on said pump rod, a series oit plates adjacent each of said cores, electric conductors forming` ar winding about said cores, the plates on certain of said cores be ing suspended below said cores and on one of said cores, said plates being' positioned above the same, and means to alternately energize the cores having` the plates below the saine and then the cores having the plates above the same for the purpose described.

5. In an electro-magnetic pump including); a pump rod, electro-magnets having' armatures comprising a series ot spaced movable plates connected with said rod to raise said rod andsimilar electro-magnets ha ving connection with said rod to lower said Vthe liuid level in the well.

` (i. 'ln a device oflg'fthe character described including .a1-pump rod, and a plurality of oj'ipositelj.Y directed operating electro-inaglnots', the combination ot two opposite current-condiicting,y wires leading to said electro-magnets, ay sliding switch in each of said wires, and a cross pin on said rod engaginc` said switches to close one and open the other ot said switches sin'iultaneously at the upper and lower extremities ot the stroke ot' said rod.

7. ln a device ot the character described, a pump rod, electro-magnets to raise said rod., a lowering' magnet to lower saidrod, opposite wires leading to said electro-inagnets, sliding' switches in each ot said wires, a transverse pin slidable in a vertical slot in said rod. and means engaging` said pin to said switches at each end, whereby one switch may be closed and the other opened simultaneously at the ripper and lower limils ot the stroke ot said pump rod.

8. In an electro-magnetically operated pump, and an electrically conducting cable leading' into the well, the combination ot a switch in said cable comprising two intertitting' parts in said cable, one ol which is slidable into and out of contact with the other, and a 'float on said slidable part, adapted to be moved through the fluid level in the well to open or close said switch.

S). In an electroanagnetically operated pump, and an electrically conducting cable leading' into the well l'or connection thereto, the combination ot a switch in said cable, coi'nprisinp; a lower contact point slidable on said cable, an upper stationary contact member, and a -float connected with said lower point and adapted to raise said point into contact with the stationary point to close the circuit in said cable when the .tluid level reaches ay certain point and to lthereail'er open said contact when the liquid level is lowered to a predetermined point.

10. In an electromagnetically operated pump, a housing' containing the operating mechanism, an electric cable extending4 from said housing,- to the surface, a joint in said cable. adjacent said housing, said joint com prising' a terminal projecting upwardly 'from said housing', 'a co-operatiirc` terminal on said cable, a flexible tube of .insillating Amaterial surrounding the upper terminal and projecting downwardly7 therefrom to telescope over the lower terminal, and a weight on said cable above said joint.

11.` In an electromagnetically operated pump, va housing containing` the operating mechanism, an electric cable extending from said housing to the surface, a joint in said material surrounding the upper terminal 1925.

cableradjaeent said housing, said joint oomguide 4for said cable yabove said lower terprising a terminal projecting upwardly minal.

from said housing, a co-operating terminal In testimony whereof I hereunto afiix my l" on said cable, a flexible tube of insulating signature this 29th day of August, A. D.

and projecting'downwardly therefrom to telescope over the lower terminal, and a VILLIAM VERNER. 

